Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun spitball

2 senses of spitball

Sense 1
spitball -- (a projectile made by chewing a piece of paper and shaping it into a sphere)
       => projectile, missile -- (a weapon that is forcibly thrown or projected at a targets but is not self-propelled)

Sense 2
spitball, spitter -- (an illegal pitch in which a foreign substance (spit or Vaseline) is applied to the ball by the pitcher before he throws it)
       => pitch, delivery -- ((baseball) the act of throwing a baseball by a pitcher to a batter)